CVE-2025-15671 Welcart e-Commerce < 2.12.1 - Session Fixation via uscesid Parameter
An attacker can hijack a customer's session by fixing the session ID, leading to account takeover after the victim logs in.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-15671?
CVE-2025-15671 is a medium-severity authentication bypass vulnerability in Unknown Welcart e-Commerce, published on 21 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Welcart e-Commerce WordPress plugin before 2.12.1 does not regenerate the session identifier on authentication and sets the session identifier from a user-supplied request parameter, allowing an unauthenticated attacker to fixate a shop member's session and take over their customer account after the victim logs in through an attacker-crafted request.
Weakness: CWE-287
Which versions are affected by CVE-2025-15671?
How do I fix CVE-2025-15671?
No fix has been published for CVE-2025-15671 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-15671 being exploited?
There is no known exploitation of CVE-2025-15671 in the wild and no public exploit code.
Sources
Also known as GHSA-5v22-2f7p-c962.